c#,unity DI:接口属性不能访问扩展接口的类内部函数

本文关键字：接口 访问 扩展 内部函数 不能 属性 unity DI | 更新日期: 2023-09-27 17:52:16

我的接口只有一个函数和一个属性。类扩展了接口，然后我们可以从同一类中声明的函数访问该属性。这里我使用unity动态调用返回IDBConnection对象的函数。

当我编译代码，然后得到错误，如

名称"ConType"在当前上下文中不存在

我想不出我在哪里出错了。所以请有人看到我的完整代码，并告诉我我在哪里犯了错误，在哪里以及如何修复它。

类代码
public interface BBAConnections
{
    IDbConnection  CreateConnection();
    string ConType { get; set; }
}
public class BBAConnection : BBAConnections
{
    string ConType { get; set; } 
    public  IDbConnection CreateConnection()
    {
        string _connectionString = "";
        IDbConnection connection=null;
        if (ConType == "local")
        {
            _connectionString = "put here local db connection";
            connection = new System.Data.SqlClient.SqlConnection(_connectionString);
        }
        else if (ConType == "remote")
        {
            _connectionString = "put here remote db connection";
            connection = new System.Data.SqlClient.SqlConnection(_connectionString);
        }
        else if (ConType == "OrcsWeb")
        {
            _connectionString = "put here website db connection";
            connection = new System.Data.SqlClient.SqlConnection(_connectionString);
        }
        else if (ConType == "Sage")
        {
            _connectionString = "put here sage connection";
            connection = new System.Data.SqlClient.SqlConnection(_connectionString);
        }
        return connection;
    }
}
public static class Factory
{
    static IUnityContainer cont = null;
    public static BBAConnections initialize(string type)
    {
        BBAConnections oDbConnection = null;
        cont = new UnityContainer();
        cont.RegisterType<BBAConnections, BBAConnection>("local");
        cont.RegisterType<BBAConnections, BBAConnection>("remote");
        cont.RegisterType<BBAConnections, BBAConnection>("OrcsWeb");
        cont.RegisterType<BBAConnections, BBAConnection>("Sage");
        oDbConnection = cont.Resolve<BBAConnections>(type);
        oDbConnection.ConType = type;
        return oDbConnection;
    }
}

像这样调用CreateConnection函数

Factory.initialize("local").CreateConnection();

c#,unity DI:接口属性不能访问扩展接口的类内部函数

首先， c#是大小写敏感的，所以您应该将所有IDbConnection更改为IDBConnection。

现在，你的接口说任何从它继承的东西必须有一个CreateConnection方法和一个ConType属性。在你的bbacontion类中，你应该创建一个名为ConType的公共字符串属性。

应该修复你的代码，它应该是这样的:

public interface IDBConnection
{
    IDBConnection CreateConnection();
    string ConType { get; set; }
}
public class BBAConnection : IDBConnection
{
    public string ConType { get; set; }
    public IDBConnection CreateConnection()
    {
        string _connectionString = "";
        IDBConnection connection = null;
        if (ConType == "local")
        {
            _connectionString = "put here local db connection";
            connection = new System.Data.SqlClient.SqlConnection(_connectionString);
        }
        else if (ConType == "remote")
        {
            _connectionString = "put here remote db connection";
            connection = new System.Data.SqlClient.SqlConnection(_connectionString);
        }
        else if (ConType == "OrcsWeb")
        {
            _connectionString = "put here website db connection";
            connection = new System.Data.SqlClient.SqlConnection(_connectionString);
        }
        else if (ConType == "Sage")
        {
            _connectionString = "put here sage connection";
            connection = new System.Data.SqlClient.SqlConnection(_connectionString);
        }
        return connection;
    }
}
public static class Factory
{
    static IUnityContainer cont = null;
    public static IDBConnection initialize(string type)
    {
        IDBConnection oDbConnection = null;
        cont = new UnityContainer();
        cont.RegisterType<IDBConnection, BBAConnection>("local");
        cont.RegisterType<IDBConnection, BBAConnection>("remote");
        cont.RegisterType<IDBConnection, BBAConnection>("OrcsWeb");
        cont.RegisterType<IDBConnection, BBAConnection>("Sage");
        oDbConnection = cont.Resolve<IDBConnection>(type);
        oDbConnection.ConType = type;
        return oDbConnection;
    }
}

将实现类中的声明更改为

public string ConType { get; set; }
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